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Finding the Fourth Proportional to 857.52, 1,182.42 and 670.41

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Solution

The fourth proportional to 857.52, 1,182.42 and 670.41 is: 924.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.52 : 1,182.42 = 670.41 : x
  2. Step 2: Convert to fraction form
    857.52/1,182.42 = 670.41/x
  3. Step 3: Cross multiply
    857.52x = 1,182.42 × 670.41
  4. Step 4: Simplify right side
    857.52x = 792,706.19
  5. Step 5: Solve for x
    x = 792,706.19/857.52
  6. Step 6: Final answer
    x = 924.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.